When your lean your bike against a tree, fencepost, picnic table, stone wall, or portajohn, always prop it against the rear tire. The bike will stay put and be much less likely to roll and tip over than if you use the bar, seat, or toptube as the contact point.

When your lean your bike against a tree, fencepost, picnic table, stone wall, or portajohn, always prop it against the rear tire. The bike will stay put and be much less likely to roll and tip over than if you use the bar, seat, or toptube as the contact point.

Is there a part "B" to this story?

You should add this to the sticky, cryptid. It's a good bit of advice that seriously gets taken for granted.